Climatology of dust aerosol size distribution and optical properties derived from remotely sensed data in the solar spectrum

D. Tanré, Y. J. Kaufman, B. N. Holben, B. Chatenet, A. Karnieli, F. Lavenu, L. Blarel, O. Dubovik, L. A. Remer, A. Smirnov

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

Abstract

Simultaneous spectral remote observations of dust properties from space and from the ground create a powerful tool for the determination of ambient dust properties integrated on the entire atmospheric column. The two measurement methods have a complementary sensitivity to variety of dust properties. The methodology is demonstrated using spectral measurements (0.47-2.21 μm) from Landsat TM over the bright Senegalian coast and dark ocean, and Aerosol Robotic Network (AERONET) radiances measured in several locations. We derive (1) the dust size distribution, showing a dominant coarse mode at 1-5 μm and a secondary mode around 0.5 μm effective radius; (2) dust absorption, which is found to be substantially smaller than reported from previous measurements; (3) the real part of the refractive index which varies within the range 1.53-1.46; and we show that (4) the effect of the dust nonspherical shape on its optical properties is not significant for scattering angles <120°.

Original languageEnglish
Article number2000JD900663
Pages (from-to)18205-18217
Number of pages13
JournalJournal of Geophysical Research
Volume106
Issue numberD16
DOIs
StatePublished - 27 Aug 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Climatology of dust aerosol size distribution and optical properties derived from remotely sensed data in the solar spectrum'. Together they form a unique fingerprint.

Cite this